Samsung Electronics Co., Ltd.

Youn-Taek Oh

Chul-Hwan Lee

Provided is an apparatus and method for pushing an e-mail to a portable terminal in an e-mail system. In an e-mail system for pushing an e-mail, an e-mail agent checks reception of a new e-mail, receives and stores the new e-mail, and generates a mail notification message, a message server receives the mail notification message and transmits it to an e-mail client, the e-mail client generates a mail request message and transmits it to the e-mail agent.

Apparatus and method for pushing e-mail to portable terminal in e-mail system

Provided is an apparatus and method for e-mail polling in a portable terminal. In the e-mail polling method, a state of the portable terminal is detected after a predetermined time period of a first timer expires in an idle state after a periodical e-mail polling mode is set in the portable terminal. E-mail polling is performed according to the detected state of the portable terminal. The state of the portable terminal is changed into an idle state after the performance of the e-mail polling.

Apparatus and method for e-mail polling in portable terminal

Disclosed are a method for reporting a transmission state by an Internet protocol (IP) and a network system using the same. The method includes the steps of determining whether discard of any datagrams occurs, and if the discard of any datagram occurs, obtaining an address of a destination by parsing a discarded datagram, and transmitting an ICMP message for reporting an occurrence of the discard of the datagrams to the address of the destination. The network system includes a source for transmitting a datagram, a destination for receiving the datagram, and a router for performing routing between a network and the source or the destination.

Method for reporting transmission state by internet protocol and network using the same

A method for driving a retransmission timer in a mobile telecommunications system using a radio link protocol. A mobile telecommunications system receives a frame transmitted from a transmitter and, if the received frame is determined to be erroneous, requests the transmitter to retransmit the frame and drives a retransmission timer. In this case, there is a probability that the retransmission timer will be held. For this reason, the method for driving the retransmission timer minimizes that probability. Accordingly, the retransmission timer expires earlier by a period of time for which it is not held, thereby allowing subsequent operations in the mobile telecommunications system to be performed quickly and at an improved data rate.

Growing community of inventors

Suwon-si, South Korea

Youn-Taek Oh